/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:58:58,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:58:58,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:58:58,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:58:58,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:58:58,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:58:58,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:58:58,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:58:58,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:58:58,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:58:58,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:58:58,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:58:58,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:58:58,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:58:58,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:58:58,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:58:58,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:58:58,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:58:58,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:58:58,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:58:58,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:58:58,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:58:58,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:58:58,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:58:58,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:58:58,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:58:58,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:58:58,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:58:58,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:58:58,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:58:58,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:58:58,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:58:58,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:58:58,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:58:58,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:58:58,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:58:58,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:58:58,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:58:58,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:58:58,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:58:58,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:58:58,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:58:58,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:58:58,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:58:58,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:58:58,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:58:58,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:58:58,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:58:58,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:58:58,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:58:58,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:58:58,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:58:58,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:58:58,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:58:58,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:58:58,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:58:58,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:58:58,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:58:58,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:58:58,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:58:58,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:58:58,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:58:58,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:58:58,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:58:58,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:58:58,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:58:58,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:58:58,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:58:58,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:58:58,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:58:58,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:58:58,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:58:59,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:58:59,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:58:59,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:58:59,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:58:59,457 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:58:59,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-26 22:58:59,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f4a27ddd/c1121f5cd3a54dfab8d8cc54673f6774/FLAG23305f2de [2020-10-26 22:59:00,793 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:59:00,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-26 22:59:00,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f4a27ddd/c1121f5cd3a54dfab8d8cc54673f6774/FLAG23305f2de [2020-10-26 22:59:01,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f4a27ddd/c1121f5cd3a54dfab8d8cc54673f6774 [2020-10-26 22:59:01,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:59:01,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:59:01,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:59:01,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:59:01,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:59:01,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:59:01" (1/1) ... [2020-10-26 22:59:01,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbadeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:01, skipping insertion in model container [2020-10-26 22:59:01,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:59:01" (1/1) ... [2020-10-26 22:59:01,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:59:01,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:59:02,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:59:02,794 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:59:03,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:59:03,617 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:59:03,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03 WrapperNode [2020-10-26 22:59:03,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:59:03,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:59:03,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:59:03,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:59:03,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... [2020-10-26 22:59:03,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... [2020-10-26 22:59:03,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... [2020-10-26 22:59:03,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... [2020-10-26 22:59:03,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... [2020-10-26 22:59:03,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... [2020-10-26 22:59:03,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... [2020-10-26 22:59:04,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:59:04,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:59:04,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:59:04,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:59:04,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:59:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:59:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:59:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:59:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:59:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:59:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:59:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:59:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:59:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:59:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:59:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:59:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:59:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:59:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:59:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:59:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:59:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:59:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:59:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:59:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:59:09,549 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:59:09,549 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:59:09,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:59:09 BoogieIcfgContainer [2020-10-26 22:59:09,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:59:09,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:59:09,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:59:09,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:59:09,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:59:01" (1/3) ... [2020-10-26 22:59:09,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3402e019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:59:09, skipping insertion in model container [2020-10-26 22:59:09,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:03" (2/3) ... [2020-10-26 22:59:09,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3402e019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:59:09, skipping insertion in model container [2020-10-26 22:59:09,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:59:09" (3/3) ... [2020-10-26 22:59:09,568 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2020-10-26 22:59:09,581 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:59:09,588 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:59:09,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:59:09,640 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:59:09,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:59:09,640 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:59:09,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:59:09,641 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:59:09,641 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:59:09,641 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:59:09,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:59:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:59:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 22:59:09,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:09,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:09,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:09,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1311531060, now seen corresponding path program 1 times [2020-10-26 22:59:09,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:09,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551017589] [2020-10-26 22:59:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:10,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:10,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:10,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 22:59:10,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-26 22:59:10,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 22:59:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:59:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:10,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:10,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:10,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:10,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:10,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 22:59:10,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:10,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551017589] [2020-10-26 22:59:10,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:10,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:59:10,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838292350] [2020-10-26 22:59:10,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:59:10,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:10,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:59:10,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:59:10,844 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:59:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:22,914 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:59:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:59:22,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 22:59:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:22,951 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:59:22,951 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:59:22,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:59:22,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:59:23,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:59:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:59:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-26 22:59:23,172 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 17 [2020-10-26 22:59:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:23,172 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-26 22:59:23,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:59:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-26 22:59:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-26 22:59:23,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:23,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:23,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:59:23,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:23,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2014086859, now seen corresponding path program 1 times [2020-10-26 22:59:23,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:23,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719427971] [2020-10-26 22:59:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:23,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:23,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 22:59:23,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:23,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-26 22:59:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:59:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 22:59:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:23,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:23,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:23,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:23,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:59:23,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:59:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:59:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:59:23,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:23,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:23,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:59:23,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:23,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 22:59:23,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:59:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:23,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719427971] [2020-10-26 22:59:23,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:59:23,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:59:23,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041743385] [2020-10-26 22:59:23,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:59:23,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:23,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:59:23,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:59:23,979 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-26 22:59:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:36,271 INFO L93 Difference]: Finished difference Result 4674 states and 7651 transitions. [2020-10-26 22:59:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:59:36,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-26 22:59:36,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:36,296 INFO L225 Difference]: With dead ends: 4674 [2020-10-26 22:59:36,296 INFO L226 Difference]: Without dead ends: 3126 [2020-10-26 22:59:36,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:59:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-10-26 22:59:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3110. [2020-10-26 22:59:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-26 22:59:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4248 transitions. [2020-10-26 22:59:36,415 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4248 transitions. Word has length 92 [2020-10-26 22:59:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:36,416 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 4248 transitions. [2020-10-26 22:59:36,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:59:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4248 transitions. [2020-10-26 22:59:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 22:59:36,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:36,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:36,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:59:36,420 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:36,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1022756303, now seen corresponding path program 1 times [2020-10-26 22:59:36,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:36,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115189179] [2020-10-26 22:59:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:36,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:37,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:37,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 22:59:37,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:59:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-26 22:59:37,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 22:59:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:59:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:37,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:37,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:59:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 22:59:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 22:59:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:59:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:38,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115189179] [2020-10-26 22:59:38,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:38,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:59:38,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496345382] [2020-10-26 22:59:38,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:38,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:38,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:38,107 INFO L87 Difference]: Start difference. First operand 3110 states and 4248 transitions. Second operand 7 states. [2020-10-26 22:59:53,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:53,633 INFO L93 Difference]: Finished difference Result 7918 states and 11412 transitions. [2020-10-26 22:59:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:59:53,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-26 22:59:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:53,664 INFO L225 Difference]: With dead ends: 7918 [2020-10-26 22:59:53,665 INFO L226 Difference]: Without dead ends: 4814 [2020-10-26 22:59:53,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:59:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4814 states. [2020-10-26 22:59:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4814 to 4738. [2020-10-26 22:59:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4738 states. [2020-10-26 22:59:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6356 transitions. [2020-10-26 22:59:53,834 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6356 transitions. Word has length 95 [2020-10-26 22:59:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:53,835 INFO L481 AbstractCegarLoop]: Abstraction has 4738 states and 6356 transitions. [2020-10-26 22:59:53,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6356 transitions. [2020-10-26 22:59:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-26 22:59:53,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:53,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:53,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:59:53,839 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:53,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1108651695, now seen corresponding path program 1 times [2020-10-26 22:59:53,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:53,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129322112] [2020-10-26 22:59:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:59:54,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:59:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-26 22:59:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:59:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:54,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:59:54,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:59:54,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:59:54,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:59:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:55,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129322112] [2020-10-26 22:59:55,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:55,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:59:55,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875030839] [2020-10-26 22:59:55,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:55,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:55,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:55,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:55,038 INFO L87 Difference]: Start difference. First operand 4738 states and 6356 transitions. Second operand 7 states. [2020-10-26 23:00:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:13,560 INFO L93 Difference]: Finished difference Result 14514 states and 19902 transitions. [2020-10-26 23:00:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:00:13,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-26 23:00:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:13,625 INFO L225 Difference]: With dead ends: 14514 [2020-10-26 23:00:13,629 INFO L226 Difference]: Without dead ends: 9782 [2020-10-26 23:00:13,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:00:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2020-10-26 23:00:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 9634. [2020-10-26 23:00:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9634 states. [2020-10-26 23:00:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9634 states to 9634 states and 12115 transitions. [2020-10-26 23:00:13,985 INFO L78 Accepts]: Start accepts. Automaton has 9634 states and 12115 transitions. Word has length 106 [2020-10-26 23:00:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:13,987 INFO L481 AbstractCegarLoop]: Abstraction has 9634 states and 12115 transitions. [2020-10-26 23:00:13,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 9634 states and 12115 transitions. [2020-10-26 23:00:13,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-26 23:00:13,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:13,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:13,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:00:13,998 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:13,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1392674138, now seen corresponding path program 1 times [2020-10-26 23:00:14,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:14,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874998632] [2020-10-26 23:00:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:00:16,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:00:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2904 [2020-10-26 23:00:16,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:00:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-26 23:00:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:17,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:17,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:17,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:17,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:00:17,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:17,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:17,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:00:17,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:17,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:00:17,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:00:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 23:00:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:17,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:00:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:00:17,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:00:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:00:17,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874998632] [2020-10-26 23:00:17,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:17,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:00:17,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225858474] [2020-10-26 23:00:17,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:00:17,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:17,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:00:17,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:00:17,673 INFO L87 Difference]: Start difference. First operand 9634 states and 12115 transitions. Second operand 8 states. [2020-10-26 23:00:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:36,394 INFO L93 Difference]: Finished difference Result 21335 states and 27929 transitions. [2020-10-26 23:00:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:00:36,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-10-26 23:00:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:36,445 INFO L225 Difference]: With dead ends: 21335 [2020-10-26 23:00:36,445 INFO L226 Difference]: Without dead ends: 9348 [2020-10-26 23:00:36,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:00:36,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2020-10-26 23:00:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 8868. [2020-10-26 23:00:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8868 states. [2020-10-26 23:00:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8868 states to 8868 states and 11097 transitions. [2020-10-26 23:00:36,770 INFO L78 Accepts]: Start accepts. Automaton has 8868 states and 11097 transitions. Word has length 164 [2020-10-26 23:00:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:36,771 INFO L481 AbstractCegarLoop]: Abstraction has 8868 states and 11097 transitions. [2020-10-26 23:00:36,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:00:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8868 states and 11097 transitions. [2020-10-26 23:00:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-26 23:00:36,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:36,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:36,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:00:36,775 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:36,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:36,775 INFO L82 PathProgramCache]: Analyzing trace with hash 622590525, now seen corresponding path program 1 times [2020-10-26 23:00:36,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:36,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628095610] [2020-10-26 23:00:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:00:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1841 [2020-10-26 23:00:38,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:00:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:38,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:38,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:00:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:39,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:39,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:00:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-26 23:00:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:00:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:00:39,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628095610] [2020-10-26 23:00:39,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:00:39,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:00:39,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902111405] [2020-10-26 23:00:39,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:00:39,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:39,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:00:39,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:39,844 INFO L87 Difference]: Start difference. First operand 8868 states and 11097 transitions. Second operand 7 states. [2020-10-26 23:00:39,993 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 23:00:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:58,565 INFO L93 Difference]: Finished difference Result 20329 states and 25728 transitions. [2020-10-26 23:00:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:00:58,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-10-26 23:00:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:58,622 INFO L225 Difference]: With dead ends: 20329 [2020-10-26 23:00:58,622 INFO L226 Difference]: Without dead ends: 12234 [2020-10-26 23:00:58,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:00:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12234 states. [2020-10-26 23:00:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12234 to 12071. [2020-10-26 23:00:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12071 states. [2020-10-26 23:00:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12071 states to 12071 states and 14597 transitions. [2020-10-26 23:00:58,985 INFO L78 Accepts]: Start accepts. Automaton has 12071 states and 14597 transitions. Word has length 165 [2020-10-26 23:00:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:58,986 INFO L481 AbstractCegarLoop]: Abstraction has 12071 states and 14597 transitions. [2020-10-26 23:00:58,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 12071 states and 14597 transitions. [2020-10-26 23:00:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-26 23:00:58,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:58,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:58,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:00:58,993 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:58,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:58,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1159352220, now seen corresponding path program 1 times [2020-10-26 23:00:58,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:58,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144067873] [2020-10-26 23:00:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:01,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-26 23:01:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:01:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2102 [2020-10-26 23:01:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 23:01:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:01:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:01,496 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:01:01,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:01,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:01,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:01,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:01:01,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:01,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:01,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:01,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:01:01,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-26 23:01:01,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 23:01:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:01:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:01:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:02,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:02,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:01:02,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-26 23:01:02,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:01:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:01:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:01:02,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144067873] [2020-10-26 23:01:02,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:01:02,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:01:02,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635948103] [2020-10-26 23:01:02,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:01:02,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:02,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:01:02,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:01:02,517 INFO L87 Difference]: Start difference. First operand 12071 states and 14597 transitions. Second operand 7 states. [2020-10-26 23:01:04,038 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:01:09,038 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:01:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:31,097 INFO L93 Difference]: Finished difference Result 35104 states and 43859 transitions. [2020-10-26 23:01:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:01:31,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-26 23:01:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:31,201 INFO L225 Difference]: With dead ends: 35104 [2020-10-26 23:01:31,202 INFO L226 Difference]: Without dead ends: 23806 [2020-10-26 23:01:31,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:01:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23806 states. [2020-10-26 23:01:31,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23806 to 22100. [2020-10-26 23:01:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22100 states. [2020-10-26 23:01:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22100 states to 22100 states and 27147 transitions. [2020-10-26 23:01:31,874 INFO L78 Accepts]: Start accepts. Automaton has 22100 states and 27147 transitions. Word has length 251 [2020-10-26 23:01:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:31,875 INFO L481 AbstractCegarLoop]: Abstraction has 22100 states and 27147 transitions. [2020-10-26 23:01:31,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:01:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand 22100 states and 27147 transitions. [2020-10-26 23:01:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 23:01:31,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:31,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:01:31,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:01:31,882 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:31,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:31,883 INFO L82 PathProgramCache]: Analyzing trace with hash -497718948, now seen corresponding path program 1 times [2020-10-26 23:01:31,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:31,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108850780] [2020-10-26 23:01:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:34,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:34,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-26 23:01:34,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:01:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2208 [2020-10-26 23:01:34,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:01:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:01:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:34,395 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:01:34,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:34,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:34,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:01:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:34,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:34,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:01:34,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 23:01:34,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:01:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:01:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:35,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:35,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:01:35,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:01:35,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:01:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:01:35,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108850780] [2020-10-26 23:01:35,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:01:35,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:01:35,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711009394] [2020-10-26 23:01:35,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:01:35,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:35,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:01:35,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:01:35,225 INFO L87 Difference]: Start difference. First operand 22100 states and 27147 transitions. Second operand 7 states. [2020-10-26 23:01:36,935 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:02:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:02:01,576 INFO L93 Difference]: Finished difference Result 58368 states and 75217 transitions. [2020-10-26 23:02:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:02:01,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-26 23:02:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:02:01,710 INFO L225 Difference]: With dead ends: 58368 [2020-10-26 23:02:01,710 INFO L226 Difference]: Without dead ends: 37041 [2020-10-26 23:02:01,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:02:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37041 states. [2020-10-26 23:02:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37041 to 36620. [2020-10-26 23:02:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36620 states. [2020-10-26 23:02:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36620 states to 36620 states and 44147 transitions. [2020-10-26 23:02:02,648 INFO L78 Accepts]: Start accepts. Automaton has 36620 states and 44147 transitions. Word has length 255 [2020-10-26 23:02:02,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:02:02,649 INFO L481 AbstractCegarLoop]: Abstraction has 36620 states and 44147 transitions. [2020-10-26 23:02:02,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:02:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 36620 states and 44147 transitions. [2020-10-26 23:02:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-26 23:02:02,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:02:02,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:02:02,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:02:02,657 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:02:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:02:02,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1950688826, now seen corresponding path program 1 times [2020-10-26 23:02:02,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:02:02,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946834045] [2020-10-26 23:02:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:02:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:02,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:03,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-26 23:02:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-26 23:02:03,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:02:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-26 23:02:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 23:02:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:03,984 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:02:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:02:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:03,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:03,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:02:04,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:04,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:02:04,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:02:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:02:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:02:04,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:02:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:04,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:04,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:02:04,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:02:04,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:02:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:02:04,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:02:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:02:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:04,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:04,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:02:04,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:02:04,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:02:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 23:02:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-26 23:02:04,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946834045] [2020-10-26 23:02:04,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:02:04,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:02:04,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860295068] [2020-10-26 23:02:04,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:02:04,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:02:04,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:02:04,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:02:04,672 INFO L87 Difference]: Start difference. First operand 36620 states and 44147 transitions. Second operand 5 states. [2020-10-26 23:02:06,382 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:02:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:02:24,525 INFO L93 Difference]: Finished difference Result 84234 states and 105499 transitions. [2020-10-26 23:02:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:02:24,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-26 23:02:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:02:24,686 INFO L225 Difference]: With dead ends: 84234 [2020-10-26 23:02:24,686 INFO L226 Difference]: Without dead ends: 48387 [2020-10-26 23:02:24,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:02:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48387 states. [2020-10-26 23:02:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48387 to 48344. [2020-10-26 23:02:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48344 states. [2020-10-26 23:02:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48344 states to 48344 states and 58103 transitions. [2020-10-26 23:02:26,303 INFO L78 Accepts]: Start accepts. Automaton has 48344 states and 58103 transitions. Word has length 302 [2020-10-26 23:02:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:02:26,304 INFO L481 AbstractCegarLoop]: Abstraction has 48344 states and 58103 transitions. [2020-10-26 23:02:26,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:02:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 48344 states and 58103 transitions. [2020-10-26 23:02:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-26 23:02:26,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:02:26,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:02:26,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:02:26,311 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:02:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:02:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash 513954634, now seen corresponding path program 1 times [2020-10-26 23:02:26,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:02:26,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881939979] [2020-10-26 23:02:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:02:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:26,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-26 23:02:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:02:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2319 [2020-10-26 23:02:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:02:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 23:02:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-26 23:02:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:28,935 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:02:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:02:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:28,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:28,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:28,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:02:28,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:28,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:02:28,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:02:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:28,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:02:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:28,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:02:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:29,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:29,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:02:29,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 23:02:29,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:02:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 23:02:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:02:29,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:02:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:29,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:29,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:02:29,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-26 23:02:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:02:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:02:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:02:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:02:30,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881939979] [2020-10-26 23:02:30,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:02:30,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:02:30,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621295494] [2020-10-26 23:02:30,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:02:30,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:02:30,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:02:30,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:02:30,208 INFO L87 Difference]: Start difference. First operand 48344 states and 58103 transitions. Second operand 7 states. [2020-10-26 23:02:30,378 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:02:38,625 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69